期刊
JOURNAL OF APPLIED PHYSICS
卷 108, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3466992
关键词
-
资金
- National Science Council of Taiwan, Republic of China [NSC 98-2112-M-001-022-MY3]
- Asian Office of Aerospace Research & Development (AOARD) [FA2386-09-1-4128]
- Ministry of Education, Science and Technology [2009-0088557]
- National Research Foundation of Korea [2009-0088557] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We have corrected the field enhancement factor for the floating sphere at emitter-plane potential model with the finite anode-cathode distance. If rho is the radius of sphere, h is the distance from cathode to the center of sphere, and l is the distance from the center to the anode, then the field enhancement factor is given as the following expression beta(sph) = (2 + 7 eta-eta(2))(lambda(2)-2 lambda + 2)/[2 eta(1 - lambda) X (2 - lambda)], where eta=rho/h, lambda=rho/l. This expression demonstrates reasonable behavior for three limiting cases: if h -> rho, if l -> infinity, and if l -> rho. We have compared our factor beta(sph) with the field enhancement factor beta(tube) for the hemisphere on a post model and the factor beta(ell) for the hemiellipsoid on plane model. We have shown realization of the approximate evaluation beta(tube) approximate to (beta(sph) + beta(ell))/2. (C) 2010 American Institute of Physics. [doi:10.1063/1.3466992]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据